IMMUNOCYTOCHEMICAL EVIDENCE THAT LUTEINIZING HORMONE (LH) AND FOLLICLE STIMULATING HORMONE (FSH) ARE PRESENT IN THE SAME CELL TYPE IN THE RHESUS MONKEY PITUITARY GLAND1

Abstract

Antisera to o[ovine]LH.beta. and h[human]FSH.beta. subunits were used to identify the gonadotrophic cells in partes distalis and tuberalis of the rhesus monkey pituitary gland. The same cell type in pituitary glands obtained from male and female rhesus monkeys stained with both antisera. Immunocytochemical staining was observed in periodic acid Schiff positive cells that were randomly dispersed throughout the entire pars distalis. The gonadotrophs did not react with antisera to either hTSH.beta. or oACTH. Only 1 gonadotrophic cell type is present in the primate pituitary gland.